The one place I used to go was an indoor fleamarket (car boot to some of you). It was one big building consisting of about 200 wooden booths. People would sell all sorts of stuff. Actually there were two different ones I used to go to. Both of them had a small arcade in the back. One of the places even sold video games. I remember they had a sit down Sinistar machine. I always used to play Rad Mobile. They had a sit down version with hydraulics in it. The whole vehicle tilted when you were driving on curves on the screen.
One of the fleamarkets had a booth that sold Atari 2600 games in the early 80's. I have very good memories, even pictures in my head, about going there and just seeing tons of games. Every inch was filled with games. If I was older back then I'd have been buying everything I could. If I knew what I know now I'd have bought a lot of the weirder stuff that might be worth more later on.
I don't think games today hold as much value or sentiment for many. There's just a small case and DVD inside. I love cartridges! Have something nice to hold.